After adding the GTK/glib set, the next blocker was `libudev-sys` (pulled by
`tokio-serial` in `wifi-densepose-desktop`):
pkg-config exited with status code 1
> pkg-config --libs --cflags libudev
The system library `libudev` required by crate `libudev-sys` was not found.
Add `libudev-dev` (and `libdbus-1-dev` defensively — Tauri's runtime
notification/tray paths use it).
Co-Authored-By: claude-flow <ruv@ruv.net>
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